Pintle control mechanism for revolving doors



June 14, 1938. T. M. HAGENBOOK PINTLE CONTROL MECHANISM FOR REVOLVING DOORS Filed Jan. 1.5,v 1937.

Patented `une 14, 19.38 y

UNITED STATES PATENT OFFICE PINTLE CONTROL MEHANISM FOR REVOLVING DOORS Thurloe M. Hagenbook, Evansville, Ind., assgnor to International Door Company, Evansville, Ind., a corporation of Illinois Application January 15, 1937, Serial No. 120,818

11 Claims. (Cl. 20-18) My invention relates broadly to revolving doors 3; Fig. 7 is a transverse sectional view on line and more particularly toa construction of control 'l--l of Fig. 3; Fig. 8 is a transverse sectional mechanism for the pintle of a revolving door. View through the control mechanism on line 8 8 One of the objects of my invention is to provide of Fig. 3*; Fig. 9 is a transverse sectional view o a construction of control mechanism for the pintle throughthe control mechanism on line 9 9 of of a revolving door structure by which the pintle Fig. 3, but showing the insertabl'e key in top elemaybe readily retracted or projected for allowing vati'on; and Fig. 10 is a cross sectional view on the collapsing of the revolving door wings adjaline ill-Ii of Fig. 3 and illustrating the latched cent one side of the revolving door drum or the device in top elevation engaged in the lower rel() journaling of the revolving door in operative' posicess of the central tubular shaft for maintaining l0 tion centrally of the revolving door drum. the pintle in projected position.

Another object of my invention is to provide a Referring to the drawing in more detail, the selectively operative spring actuated latch device revolving door wings are represented by reference for maintaining the pintle of a revolving door in character l'. A cylindrical housing 2 extends over i retracted or projected position. the central tubular shaft 3, through which the 15 A further object of my invention is to provide central shaft li extends. The pintle 5 is coupled a two-position shiftable control mechanism for to central shaft ll. Pintle 5 carries at its lower the pintle of a revolving door adapted to receive end, a headed portion t3 which is diametrically an insertable key device engageable with the conslotted as indicated at 'l for engaging the diatrol mechanism for disengaginga spring actuated metrically extending member 8 in the seat 9 20 latch and allowing the pintle to be shifted to mounted centrally of thebase of the drum of the either retracted or projected position. revolving door. The seat 9 is suitably arranged Still another object of my invention is to'prowith respect to the foundation II constituting Vide a construction of spring actuated latch carthe base of the revolving door drum by means of ried by the pintle control mechanism of a revolvthe journal box I0. 25 ing door and engageable from the housing of the The lower end of the central tubular shaft 3 revolving door shaft for permitting the retraction carries a concentric bushing I2 mounted in cyor projection of the pintle. lindrical recess i4 in the tubular shaft 3. 'Ihere Other and further objects of my invention reis a longitudinal slot l5 in the' tubular shaft 3 nism for revolving doors as set forth more fully hangers, which, for the purpose of simplicity I in the specification hereinafter following by referhave not illustrated. The cylindrical housing 2 ence tothe accompanying drawing in which: iS prOVided With a 101'1git11d11a11y eXteIlding SlOt Figure l is a fragmentary vertical sectional I'S which is aligned with the longitudinal S10t l5 view showing the pintle control mechanism in tubular shaft 3. 35

shifted tol a position projecting the pintle for A block member i7 having a Width Which supporting the revolving door wings in rotating readilyv allowsv the block member Il to pass position; Fig. 2 is an enlarged vertical sectionaly through slot l5 in tubular shaft 3 is secured to view taken on line 2-2 of Fig. 3 and showing the central shaft 4 by means of screws 2B. The block -lo external plate of the control mechanism in front member Il is provided with a laterally extending i0 elevation; Fig. 3 is an enlarged fragmentary IJOltiOii i@ frOm WhiCh lugs 2| @Xtend OIWMCUY vertical sectional view through the control mechat opposite ends of the block member I l. There anism with the pintle illustrated in projected is an intermediate recess i9 in block member Il positionk preparatory to an unlatching operation between the forwardly projecting lugs 2l,

side in the construction of pintle control mechain a positiOn intermediate the l"PVOlViig (1001" 30l and raising of the pintle; Fig. 4 is a fragmentary An 4eSClltCileOrl plate 22, COIIOImiUg t0 the Cy- 4:5v

vertical sectional View of the pintle control lindrical' contour of the cylindrical housing 2, is mechanism-'showing the latching device in operaconnected by means of screws 23` to the forwardly tion and the pintle shifted from' a projected posiprojecting lugs 2l on block member Il, so that tion to a retracted position and about to be the plate is movable with block member Il'. The

latched in the retracted position; Fig. 5 is an longitudinal and transverse dimensions of escut- 50 enlarged cross sectional View illustrating the cheon plate'22 are such that the longitudinally latching device in latched position maintaining extending slot i6 in cylindrical housing 2 is the pintle control mechanism in retracted posialways completely covered in either of the limiting tion; Fig. 6 is a transverse sectional view through positions to which the pintle 5 may be shifted.

the pintle control mechanism Von line B-G of Fig. The block vmember Il is transversely apertured 55 for the passage of the shank 25 of latch device 24. There is a transversely extending socket 26 in central shaft 4 directly aligned with the aperture in block member Il through which the shank 25 of latch device 24 extends. A spring 21 is mounted in socket 26 and tends to continuously urge the latch device toa projected position s0 that the head of the latch device tends to engage either the lower recess 23 in cylindrical housing 2 or the upper recess 29 in cylindrical housing 2 when the block member ll is shifted to positions in which pintle 5 is either retracted or projected.

In order to effect retraction or projection of pintle 5, I provide a key device 3B having a head or grip 3l thereon and which is adapted to be inserted through the aperture in escutcheon plate 22 and through the passage 33 in block member Il and through the transversely aligned passage 32 in central shaft il. The head or grip 3l of the insertable key 3l) is of such diameter that it may readily pass through aperture 35 in escutcheon plate 22 and slot i6 in the cylindrical housing 2 and be pressed inwardly for engaging the disc like head of latch device 2A. By pressing inwardly on head 3l the disc like head of latch 2t may be moved out of engagement with lower recess 28 in cylindrical housing 2, illustrated in Fig. 3, by movement of the disc like head of latch device 24 against the yielding action of spring 2l. When the disc like head of latch device 24 is pressed inwardly out of engagement with the lower recess 28, the head or nger grip 3l may be lifted and the control mechanism shifted vertically from the position illustrated in Fig. 3 to the position illustrated in Fig. 4. By this operation pintle 5 is retracted so that the revolving door wings may be shifted in collapsed relation against one wall of the revolving door drum. The key may be maintained in position by elevating the pintle until the upper limit of the pintle to retracted position is reached, as illustrated in Fig. 4 whereupon the key may be withdrawn, allowing the disc like head of latch device 24 to be forced by means of spring 26 to a seat in the upper recess 29 in cylindrical housing 2. The pintle will then be retained in retracted position by positive engagement between the disc like head of latch device 24 in the upper recess 29 in cylindrical housing 2. The key is so constructed that the shoulder Sla thereof immediately beneath the head 3l serves as an engagement means for a peripheral portion of the disc like head of the latch device 24 for effecting transverse displacement of the disc like head against the action of spring 2l.

When it is desired to restore pintle 5 to projected position, the key is again inserted through aperture 33 in block member il and through transverse passage 32 in shaft 4 and pressed transversely, allowing shoulder Sla of the head 3l to engage a peripheral portion of the disc shaped head of latch device 24, for moving the latch device transversely against the action of spring 21 and disengaging the disc like head 24 rom upper recess 29, allowing central shaft 4 to be moved downwardly and pintle 5 projected in a position for journaling the revolving door wings centrally of the revolving door drum.

In order to prevent accidental jamming of the key device in inserted position, I provide apertures 36 and 3l in the cylindrical housing 2 and respectively aligned apertures 31V and 34 in the central tubular shaft 3 to permit the insertion of a suitable tool for dislodging the key from inserted position should it become impractical to withdraw the key from the grip or finger portion 3| thereof.

I have found the construction of my invention highly practical in construction and operation, but I realize that modifications of my invention may be made and I desire that it be understood that no limitations upon my invention are intended other than may be imposed by the scope of the appended claims.

What I claim as new and desire toI secure by Letters Patent of the United States is as follows:

1. Pintle control mechanism for a revolving door comprising in combination with a central tubular shaft, a housing concentrically disposed about the shaft, said shaft and said housing having aligned longitudinal slots, a projectable and retractible pintle controllable through the central tubular shaft, a member connected with the pintle and having a portion thereof projecting through the slots in the central tubular shaft and the housing disposed about the central tubular shaft and operable through substantially the full length thereof, and latch mechanism carried by said member and engageable with enlarged portions of the slot in said housing in either of the limits of movement of said member for maintaining the pintle in either a projected or retracted position.

2. Pintle control mechanism for revolving doors comprising incombination with the central shaft of a revolving door, a pintle connected with the central shaft, a housing disposed in spaced relation to said shaft and having a longitudinal slot therein, a control mechanism operable through said slot and substantially throughout the full length thereof for vertically shifting the pintle to either a retracted or a projected position with resp-ect to the housing, and means carried by the control mechanism and engageable with enlarged portions of the slot in the housing for maintaining the pintle in either a projected or a retracted position.

3. Pintle control mechanism for revolving doors comprising in combination with the central shaft of a revolving door, a pintle connected with the central shaft, a housing disposed in spaced relation to said shaft and having a longitudinal slot therein, a control mechanism operable through said slot for vertically shifting the pintle to either a retracted or a projected position with respect to the housing and having lugs extending into the slot in said housing, a spring actuated latch carried by said control mechanism and 0perative to. engage enlarged portions of the slot in said housing in either the retracted or projected position of the pintle, and a plate member mounted on said lugs and adapted to cover said slot. Y

4. Pintle control mechanism for revolving doors comprising in combination with the central shaft of a revolving door, a pintle connected with the central shaft, a housing disposed in spaced relation to said shaft and having a longitudinal slot therein, a control mechanism operable through said slot for vertically shifting the pintle to either a retracted or a projected position with respect to the housing and having lugs extending into the slot in said housing, a spring actuated transversely movable latch carried by said control mechanism, a head on said latch, the slot in said housing having recesses therein corresponding to the retracted and the projected positionsl of the pintle for receiving the head of the latch and maintaining the pintle in either retracted or projected position, and a plate member mounted on said lugs and adapted to cover said slot, said plate member having an opening therein embracing at Atherein corresponding to the retracted and projected position of the pintle, spring means urging said latch to projected position for engaging the head of the latch in the said recesses, and a key insertable through said slot and engageable in said control mechanism and with the head of the latch for disengaging the head of the latch from Aeither of the said recesses for shifting the pintle from one limiting position to another.

6. Pintle control mechanism for revolving doors comprising in combination With the central shaft of a revolving door, a pintle connected with the central shaft, a housing disposed in spaced relation to said shaft and having a longitudinal slot therein, a control mechanism operable through said slot for vertically shifting the pintle to either a retracted or a projected position With respect to the housing, a latch carried by said control mechanism, a spring operating to yieldably force said latch radially outward, the slot in said housing having recesses therein corresponding to the retracted and the projected position of the pintle, a head on said latch engageable in said recesses in either of the limiting positions of the pintle, and an insertable key transversely directed With respect to the central shaft and through the slot in said housing into said control mechanism, said key having a shoulder thereon engageable with the head of the latch for shifting the latch against the yieldable force sitions of said pintle, for permitting entry of a tool for ejecting said key With the pintle in either of said positions.

8. Pintle control mechanism for revolving doors comprising in combination with a central tubular shaft and a housing therefor, a retractible and proj ectable pintle concentrically disposedvvith respect to said shaft, a block member connected with said pintle, said housing having a slot therein and said block member disposed in said slot, a plate member mounted on said block member and adapted to cover said slot, and means for shifting said block member in said slot for retracting or projecting said pintle.

9. Pintle control mechanism for revolving doors as set forth in claim 8 and including means for latching said pintle in retracted or projected position.

l0. Pintle control mechanism for revolving doors comprising in combination With a central tubular shaft and a housing therefor, a retractible and projectable pintle concentrically disposed with respect to said shaft, a block member connected with said pintle, said housing having a slot therein and said block member disposed in said slot, a plate member mounted on said block member and adapted to cover said slot, latching means mounted in said block member and engageable with .a coacting portion of said housing, said plate member having an opening therein exposing at least a portion of said latching means, and means for shifting said block member in said slot.

11. Pintle control mechanism for revolving doors comprising in combination with a central tubular shaft and a housing therefor, a retractible and projectable pintle concentrically disposed With respect to said shaft, a block member connected with said pintle, said housing having a slot therein and said block member disposed in said slot, a plate member mounted on said block member and adapted to cover said slot, latching means mounted in said block member and engageable with a coacting portion of said housing, said plate member having an opening therein exposing at least a portion of said latching means, and means insertable through the opening in said plate member and engageable with the exposed portion of said latching means for releasing said latching means and shifting said block member in said slot.

THURLOE, M. HAGENBOOK. 

